package org.small.shop.phone.api.utils.objectcope;

import java.lang.reflect.Method;
import java.util.Arrays;
import java.util.Collection;
import java.util.List;


public class ObjectCopeUtils {
	/** 
	     * 利用反射实现对象之间属性复制 
	     * @param from 
	     * @param to 
	     */  
	    public static void copyProperties(Object from, Object to) throws Exception {  
	        copyPropertiesExclude(from, to, null);  
	    }  
	      
	    /** 
	     * 复制对象属性 
	     * @param from 
	     * @param to 
	     * @param excludsArray 排除属性列表 
	     * @throws Exception 
	     */  
	    @SuppressWarnings("unchecked")  
	    public static void copyPropertiesExclude(Object from, Object to, String[] excludsArray) throws Exception {  
	        
	    	List<String> excludesList = null;  
	        if(excludsArray != null && excludsArray.length > 0) {  
	            excludesList = Arrays.asList(excludsArray); //构造列表对象  
	        }  
	        Method[] fromMethods = from.getClass().getDeclaredMethods();  
	        Method[] toMethods = to.getClass().getDeclaredMethods();  
	        Method fromMethod = null, toMethod = null;  
	        String fromMethodName = null, toMethodName = null;  
	        for (int i = 0; i < fromMethods.length; i++) {  
	            fromMethod = fromMethods[i];  
	            fromMethodName = fromMethod.getName();  
	            if (!fromMethodName.contains("get"))  
	                continue;  
	            //排除列表检测  
	            if(excludesList != null && excludesList.contains(fromMethodName.substring(3).toLowerCase())) {  
	                continue;  
	            }  
	            toMethodName = "set" + fromMethodName.substring(3);  
	            toMethod = findMethodByName(toMethods, toMethodName);  
	            if (toMethod == null)  
	                continue;  
	            Object value = fromMethod.invoke(from, new Object[0]);  
	            if(value == null)  
	                continue;  
	            //集合类判空处理  
	            if(value instanceof Collection) {  
	                Collection<Object> newValue = (Collection<Object>)value;  
	                if(newValue.size() <= 0)  
	                    continue;  
	            }  
	            toMethod.invoke(to, new Object[] {value});  
	        }  
	    }  
	      
	    /** 
	     * 对象属性值复制，仅复制指定名称的属性值 
	     * @param from 
	     * @param to 
	     * @param includsArray 
	     * @throws Exception 
	     */  
	    public static void copyPropertiesInclude(Object from, Object to, String[] includsArray) throws Exception {  
	        List<String> includesList = null;  
	        if(includsArray != null && includsArray.length > 0) {  
	            includesList = Arrays.asList(includsArray); //构造列表对象  
	        } else {  
	            return;  
	        }  
	        Method[] fromMethods = from.getClass().getDeclaredMethods();  
	        Method[] toMethods = to.getClass().getDeclaredMethods();  
	        Method fromMethod = null, toMethod = null;  
	        String fromMethodName = null, toMethodName = null;  
	        for (int i = 0; i < fromMethods.length; i++) {  
	            fromMethod = fromMethods[i];  
	            fromMethodName = fromMethod.getName();  
	            if (!fromMethodName.contains("get"))  
	                continue;  
	            //排除列表检测  
	            String str = fromMethodName.substring(3);  
	            if(!includesList.contains(str.substring(0,1).toLowerCase() + str.substring(1))) {  
	                continue;  
	            }  
	            toMethodName = "set" + fromMethodName.substring(3);  
	            toMethod = findMethodByName(toMethods, toMethodName);  
	            if (toMethod == null)  
	                continue;  
	            Object value = fromMethod.invoke(from, new Object[0]);  
	            if(value == null)  
	                continue;  
	            //集合类判空处理  
	            if(value instanceof Collection) {  
	                @SuppressWarnings("unchecked")
					Collection<Object> newValue = (Collection<Object>)value;  
	                if(newValue.size() <= 0)  
	                    continue;  
	            }  
	            toMethod.invoke(to, new Object[] {value});  
	        }  
	    }  
	      
	      
	
	    /** 
	     * 从方法数组中获取指定名称的方法 
	     *  
	     * @param methods 
	     * @param name 
	     * @return 
	     */  
	    public static Method findMethodByName(Method[] methods, String name) {  
	        for (int j = 0; j < methods.length; j++) {  
	            if (methods[j].getName().equals(name))  
	                return methods[j];  
	        }  
	        return null;  
	    }  
}

